Quantification of particle separation using electrostatically charged spray mist in a dust chamber  

作　　者：Marcel Zillgitt Eberhard Schmidt 

机构地区：[1]Institute of Particle Technology,Rainer Gruenter StraBe,Building FF,Campus,Freudenberg,Bergische Universitat Wuppertal,42119 Wuppertal,Germany

出　　处：《Particuology》2021年第5期92-98,共7页颗粒学报（英文版）

摘　　要：In order to improve the efficiency of reducing fine dust emissions from diffuse sources,the commonly used water mist can be electrostatically charged.Thus,the attraction between particles and droplets increases due to electrostatic field forces.In the experimental investigations carried out,an electrostatic two-fluid nozzle was used to generate a charged spray mist according to the principle of charging by induction.In a chamber,dispersed dust was precipitated with the spray mist,while detecting the laser light attenuation.By means of comparative measurements it could be shown that faster sedimentation and separation takes place through electrostatic attraction.Parameter variations regarding the use of compressed air and water were investigated and the sedimentation time of the particle-droplet mixture in the chamber was shown.A size distribution was then calculated from the laser light attenuation,which shows that the proportion of small particles decreases with spray application.Furthermore,the influence of the polarity of droplets and solid particles on the reduction measure was determined.

关 键 词：Dust separation Spray mist Electrostatic Dust chamber Laser light attenuation Charging by induction 

分 类 号：TU834.632[建筑科学—供热、供燃气、通风及空调工程]